main{
    width: 1020px;
    height: 100vh;
    border: solid 1px black;
    margin: 0 auto;
    article{
        width: 750px;
        height: 300px;
        background-color: red;
        float: left;
    }
    aside{
        width: 200px;
        height: 300px;
        background: green;
        float: right;
    }
}
